820-3787 Green Light, No Fan Spin, PM_SLP

[computercaverva]

I have a liquid damage 820-3787 that gets Green Light, No Fan Spin. The corrosion seems to be focused around the IO Board Flex Cable Connector J9510. I've investigate the U7501 area pretty closely as well as the U1950 and U6100 areas as this board is missing PM_SLP_S4_L.

PPBUS: 12.57V
PPVRTC: 3.344v
PP3V42: 3.427V
CPU / GPU Computing Lines: 12.57V
PP3V3_S5: 3.344V
PP3V3_S4: 0.011V
PP3V3_SUS: 3.344V
P3V3S3_S4: 3.265V
PP3V3_S3: 0V
PP3V3_S0: 0.070V
PP5V_S5: 5.033V
PP5V_S4: 0V
PP5V_S3: 0.002V
PP5V_S0: 0V
PM_SLP_S4_L: 0V

 

[dukefawks]

IO board disconnected? J9510 is corroded it may have crap under it.